Wayland is probably going to be the default in all the next stable releases (RHEL, debian (is it already the case?), Ubuntu). Not supporting it sounds risky.
Risky, but for whom? If my GPU stops working with the Linux distro I use, I'm definitely more likely to change my distro. GPUs are expensive and there isn't much choice between vendors. Linux distributions are free and there's plenty of choice between vendors AND between versions.
Selling a GPU takes time and loses you money - and that's in PC case, because on a laptop you don't even have that option.
Moreover, if you have an NVIDIA GPU, you most likely need a decent GPU for something - high-end video games, 3D modelling work, GPU-accelerated computations, etc. Linux distros are, frankly, not much different for one another - they're pretty interchangeable for almost all tasks I can think of as a user/developer. GPUs, on the other hand, are a bit less interchangeable between vendors. You really have only two players to choose from (Intel GPUs don't count for anything serious) - so if both suddenly become incompatibile with a given Linux distro, then it's obviously bye bye to that Linux distro.
